Ibn Qudamah al-Maqdisi رحمه الله
“Know
that not everyone is suitable to be your friend. You must verify that this
potential friend has the necessary characteristics that make friendship with
him something to be desired. The one you seek to befriend must have five characteristics:
-He must be
intelligent, as there is no good in befriending an idiot, as he will only harm
you when he wants to benefit you. By intelligent, we mean one who understands
things as they are, either on his own, or if they are explained to him;
-He must have
good manners, and this is a must. One who is simply intelligent might be
overcome by anger or desire, and obey his desire. Thus, there would be no
benefit in befriending him;